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MBMd Bahar Uddin30/08/2024

We know that S-N curve is applicable for fully reversible stress (R=-1). So, to create a S-N curve for other stress ratio such as (R=0 or R≠-1), an equivalent reversible stress needs to be determined by using Modified Goodman/ Gerber formula as stated in Shigley's Mechanical Engineering design book. So, does not it mean that during simulation for determining fatigue life with R=0 or R≠-1, we must select